High · CVSS 7.1CVE-2026-105860

Payload: Tenant authorization bypass in Multi-Tenant PluginCVE-2026-105860

Answer in brief

CVE-2026-105860 records a High severity (CVSS 7.1) vulnerability in Payload: Tenant authorization bypass in Multi-Tenant Plugin. The current sources do not mark it as known exploited. The current feed maps payloadcms/payload (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.1
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps payloadcms/payload (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
payloadcms/payloadgeneric	<3.90.0 \|\| >=4.0.0-canary.0 <4.0.0-canary.34	3.90.0, 4.0.0-canary.34

Recommended response

Check inventory. Check lockfiles and deployed manifests for payloadcms/payload.
Review the reported fix. Update payloadcms/payload to 3.90.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 6, 2026

Sources and claim methodology

Upstream source description

Payload is a free and open source headless content management system. In @payloadcms/plugin-multi-tenant versions before 3.90.0 and canary versions before 4.0.0-canary.34, the default tenant array field access allows an authenticated user to assign the user's own account to other tenants. Deployments that replace the default behavior with secured tenants arrayFieldAccess.create and tenants arrayFieldAccess.update functions are not affected by this behavior. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Quoted source text, attributed separately from HOL analysis.